Real Estate and Loans Receivable - Development Activities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified				0 Months Ended			12 Months Ended		9 Months Ended	12 Months Ended			0 Months Ended	12 Months Ended	0 Months Ended
	Dec. 31, 2013	May 04, 2012 Bed	Mar. 02, 2012 Florence, AZ [Member]	Dec. 20, 2012 Location Various [Member]	Oct. 02, 2012 Ernest [Member]	Jun. 13, 2012 Ernest [Member] Bed	Dec. 31, 2013 Development Activities [Member]	Dec. 31, 2013 Development Activities [Member] Twelve Oaks Facility [Member]	Jun. 11, 2013 Development Activities [Member] First Choice [Member] Room	Dec. 31, 2013 Development Activities [Member] Location Houston, TX [Member]	Dec. 31, 2013 Development Activities [Member] Emergency Room Facility One [Member]	Dec. 31, 2013 Development Activities [Member] Emergency Room Facility Two [Member]	May 20, 2013 Development Activities [Member] Rehabilitation Facility in South Ogden [Member]	Dec. 31, 2013 Development Activities [Member] Rehabilitation Facility in South Ogden [Member]	Mar. 04, 2013 Development Activities [Member] Rehabilitation Facility in Post Falls, Idaho [Member]
Significant Acquisitions and Disposals [Line Items]
Number of freestanding emergency room facility									25
Estimated total development cost, funded							$ 9.1		$ 100.0					$ 16.4
Estimated total development cost				33.5						37.8			19.2		14.4
Expected facility completion date											Fourth quarter of 2013	2014		Second quarter of 2014
Total development cost on inpatient rehabiliation hospital					16.9
Number of beds		26				40
Cost of land and building	$ 9.4		$ 30.0			$ 15.7
Lease agreement			25 years					15 years
Facility partially occupied date								Jan. 23, 2013
Percentage of facility partially occupied								55.00%